PRODUÇÃO E QUALIDADE FORRAGEIRA DA ERVA SAL IRRIGADA COM REJEITO DA DESSALINIZAÇÃO POR OSMOSE REVERSA

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1 YIELD AND FORAGE QUALITY OF SALTBUSH IRRIGATED WITH REJECT BRINE FROM A DESALINATION PLANT BY REVERSE OSMOSIS 1 EDYMARA SINTHIA ROCHA DE MOURA* 2, CHRISTIANO REBOUÇAS COSME 3, NILDO DA SILVA DIAS 3, JEANE CRUZ PORTELA 3, ANA CLAUDIA MEDEIROS SOUZA 3 ABSTRACT - Rural communitie located in the Brazilian Northeat, epecially in the emiarid zone, live with water hortage reulting from erratic rainfall. Thi work propoe the cultivation of altbuh (Atriplex nummularia) in the Rural Settlement Project of Boa Fé, Mooró/RN a alternative to the dipoal of reject brine from a dealination plant on yield of forage. The tatitical deign wa a plit-plot deign, being four treatment at the plot, related to level of oil moiture by moiture from Field Capacity (FC) (100%, 85%, 70% and 50% of FC) and in ubplot and two level of organic manure (without fertilized and fertilized) with four replication. The variable of yield and forage quality of altbuh were analyzed. It wa oberved that altbuh ha a great production capacity in term of freh matter and drought for altbuh under a level of 85% oil moiture in relation to the field capacity of oil, preenting minimal lo of yield; however, thi proved to be productive even with the dry oil. The total yield wa atifactory, howing it viability for forage production. Keyword: Atriplex nummularia. Water reue. Salinity. PRODUÇÃO E QUALIDADE FORRAGEIRA DA ERVA SAL IRRIGADA COM REJEITO DA DESSALINIZAÇÃO POR OSMOSE REVERSA RESUMO - A comunidade rurai ituada no Nordete braileiro, em epecial na região emiárida, convivem com a ecaez de água reultante da irregularidade da chuva neta região. O preente trabalho propô cultivar a erva al (Atriplex nummularia) no Projeto de aentamento Rural Boa Fé, Mooró/RN como alternativa à depoição do rejeito alino para 1

2 a produção de forragem. O delineamento etatítico foi parcela ubdividida, endo quatro tratamento na parcela, referente a nívei de umidade do olo tendo como bae a umidade na Capacidade de Campo (CC) (100%, 85%, 70% e 50% da CC) e na ubparcela, doi nívei de adubação orgânica (não adubado e adubado), com quatro repetiçõe. Foram analiada variávei de produção e qualidade da forragem da erva al. Obervou-e que, a erva al poui boa capacidade de produção de matéria freca e eca ob um nível de 85% de umidade do olo em relação à ua capacidade de campo, apreentando mínima perda de rendimento, porém, motrou-e produtiva memo com o olo mai eco. A produtividade total foi atifatória motrando ua viabilidade para a produção de forragem. Palavra-chave: Atriplex nummularia. Reuo de água. Salinidade. * Correponding Author 1 Received for publication in xx/xx/xxxx; accepted in xx/xx/xxxx. Extracted from the firt author' Mater' diertation, funded by CNPq 2 Univeridade do Etado do Rio Grande do Norte, Mooró, RN, Brazil; mara_rm@hotmail.com.br. 3 Department of Environmental Science and Technological, Univeridade Federal Rural do Semi-Árido, Mooró, RN, Brazil; chritianorebouca@ufera.edu.br, nildo@ufera.edu.br, jeane@ufera.edu.br, anaclaudia.gambiental@hotmail.com. INTRODUCTION In the Brazilian Northeat, epecially in the emiarid region, irregular rainfall caue a carcity of hallow water depoit, reulting in a lack of water. In mot rural communitie of thi region, the exitence of thi phenomenon i remarkable. However, it reult in problem regarding the upply of drinking water. In view of thi problem and the great potential groundwater reource, the drilling of well to pump thee water ha become a viable alternative commonly ued for the irrigation of variou horticulture area through hallow well with a low contruction cot but with relatively high alt concentration (SOUZA et al., 2009; DIAS et al., 2011; SOARES et al., 2015). 2

3 The drilling of well ha been ued a a ource of water for many rural communitie of thi region. However, even with groundwater being identified a a viable alternative to enure acce to water by rural communitie in the Northeat, uch ource of water preent in mot cae ue retriction for human conumption becaue of alinity problem (MEDEIROS et al., 2014; TERCEIRO NETO et al., 2014). To minimize thi problem, the Federal Government etablihed the Frehwater Program. It main objective i to olve the lack of water upply in thee communitie by intalling and maintaining brackih water treatment tation (dealination plant) in rural communitie to treat water from well (SOARES et al., 2006). In Mooró, thi program ha benefited about 50 communitie. Revere omoi i a technology widely ued for the treatment of brackih water (PORTO et al., 2006), with ucceful experience in mot location where dealting water treatment unit are implemented. The ue of revere omoi dealination ha progreed remarkably, and the market and it application are being coniderably expanded. However, it economic apect limit it expanion. The depoition of the wate generated by treatment plant create environmental concern becaue of it high oil or water polluting capacity, if the proce i not done correctly. In view of thi, alternative to thi wate reue are being tudied. The ue of evaporation tank, tilapia and hrimp breeding and cultivation of halophyte are current alternative more convenient to the detiny of thi wate. Regarding the cultivation of halophyte, Atriplex nummularia, alo known a altbuh, ha excelled in Brazil, being the object of everal tudie. Becaue it i from arid region, Atriplex i epecially important becaue it i able to produce and maintain an abundant bioma even in high aridity and alinity environment (PORTO et al., 2006). It i important to the phytoremediation proce of oil affected by alt becaue it i convenient to the requirement of thi proce; it produce an abundant bioma in oil with a high alt content and tolerate drought, a common factor in arid and emi-arid area (SOUZA et al., 2012). From thi perpective, thi tudy aimed to ue aline wate from a brackih water treatment tation located at the ettlement Project Boa Fé (Mooró, RN) for the irrigation of altbuh (Atriplex nummularia) in order to evaluate it yield potential and forage quality. MATERIAL AND METHODS 3

4 The experiment wa conducted from September to December 2012 in the Settlement Project Boa Fé, located along the BR 304 highway, rural zone of the municipality of Mooró, RN (geographical coordinate: 5º03'07.32" S and 37º20'22.42" W). The experimental area wa 180 m². It i located near a brackih water treatment tation, facilitating handling the aline wate to be ued in reearch. An irrigation ytem localized by gravity wa choen mainly becaue it doe not require electrical power to operate. Microtube emitter of 1.5 mm in diameter and 1.5 m in length were ued, reulting in an average flow rate of 5.0 L h -1. In order to tandardize irrigation, both the irrigation hoe and the height of the water emiion by the microtube were leveled in the entire experiment area. The Chritianen Uniformity Coefficient (CUC) wa calculated, obtaining 93% uniformity. A reervoir for wate torage to be ued for irrigation, with a capacity of 1,000 L, wa placed on a wooden tructure at a 2.0 m height. It wa intalled in the center of the experimental area for a better ditribution of irrigation water to plant. The chemical compoition of the aline effluent ued in irrigation i hown in Table 1. Table 1. Phyical and chemical characteritic of the wate from water dealination ued in the irrigation of altbuh. ph EC K + Na + Ca 2 + Mg 2+ Cl CO 3 HCO 3 SAR Hardne Cation Anio 1 n (water ds mmol ) m -1 c L mg L mmol c L ,92 9,35 0,63 43,23 40,6 31,40 154,00 8,00 0,00 7, ,96 162, SAR = Na + /[(Ca 2+ + Mg 2+ )/2] 1/2 The experimental deign wa a plit plot deign with four treatment related to oil moiture level baed on moiture of Field Capacity (FC) in plot and ubplot and two level of organic fertilization, with four replication and two plant per ubplot, totaling 64 plant. Baed on the oil water retention curve, the voltage at field capacity wa et to 6 kpa (60 cm.ca) and the moiture in FC correponded to cm 3 cm -3. Thi voltage to determine FC in the experiment wa adopted becaue the oil i granulometrically claified a andy 4

5 loam baed on the function of the level of and, ilt and clay, which provide it with relevant drain power. In addition, everal author have potulated that the field capacity for tropical oil correpond to voltage ranging from 6 to 10 kpa (MELLO et al., 2002; ANDRADE; STONE, 2011). The effect of oil moiture were teted. The treatment of the plot wa thu determined a T 1 = 100% of FC ( cm 3 cm -3 ), T 2 = 85% of FC ( cm 3 cm -3 ), T 3 = 70% of FC ( cm 3 cm -3 ) and T 4 = 50% of FC ( cm 3 cm -3 ). In the ubplot, the treatment were without fertilization (F 0 ) and with an organic fertilizer (F 1 ). The organic feedtock wa goat manure in the amount of 1.5 L per plant. The fertilizer wa manually applied in a ingle doe on 15 cm-deep hole lateral to the plant. Irrigation wa performed daily. Baed on the average reading from train of water in the oil uing teniometer intalled in each experimental plot, the current oil moiture wa obtained in each treatment uing the oil water retention curve, allowing calculation of the volume of irrigation neceary to maintain the oil moiture level propoed by the treatment. At the beginning of the experiment, all plant that were ix month were cut, maintaining the height and the crown diameter at 40 cm with the aid of a cylindrical-haped mold made of PVC with thee dimenion in order to tandardize the ize of the plant, thu facilitating the meaurement of production at the end of the production cycle, the moment when the cutting wa carried out (harvet) after three month of cultivation. Before the altbuh cutting, meaurement of the crown diameter (CD) and plant height (PH) of all plant were performed. Then, there wa a cutting of all eparated material into leave and tem to determine leaf freh matter (LFM), tem freh matter (SFM), and total freh matter (TFM) by the um of LFM and SFM. Leaf dry matter (LDM) and tem dry matter (SDM) were obtained after drying the material in an oven with forced air circulation at 65 C until contant weight. The total dry matter (TDM) wa obtained by the um of LDM and SDM. To evaluate the quality of the forage produced by altbuh, the percentage of dry matter (DM) and level of organic matter (OM), mineral matter (MM) and crude protein (CP) were determined according to the methodology decribed by Silva and Queiroz (2002). The data were ubmitted to ANOVA and regreion for a quantitative treatment of plot and to an average tet of ubplot uing Aitat oftware (SILVA; AZEVEDO, 2009). 5

6 RESULTS AND DISCUSSION All growth and production variable of altbuh analyzed uffered ignificant linear effect influenced by the oil moiture level to which the plant were ubmitted. However, organic fertilization did not ignificantly affect any of the variable; i.e., in production term, Atriplex nummularia did not repond to the fertilization performed in the preent tudy, proving to be a plant with rutic feature in thi repect (Table 2). Table 2. Summary of the analyi of variance for the variable Leaf Freh Matter (LFM), Stem Freh Matter (SFM), Leaf Dry Matter (LDM), Stem Dry Matter (SDM), Plant height (PH), Crown Diameter (CD), Total Freh Matter (TFM) and Total Dry Matter (TDM). SV Soil moiture levei (SML) Linear regreion Quadratic regreion Cúbic regreion Reidue (SML) DF MS LFM SFM LDM SDM PH CD TFM TDM , , , ,924 1 Plot 15 Fertilizatio n (F) Interaction (SML) x (F) Reíduo (F) TOTAL 31 CV% (SML) ,437* * ,12 9** 49446,305 ** 23223, ,62 n 5550,262 n 300,374 n 2003, ,69 n 26449,551 n ** n 2548,505 n 4271,488 n 277, ,07 6* 70,507 n 346, ,00* * , ,0 9** 51538, ,08 5** 39,382 n 1277,095 n 752,380 n n , ,751 3,751 n 0,00000 n 7 n , , , , ,684 73, , , ,171 n 16408,227 n ,651 n 21668,984 n 2209,044 n 3378,161 n 3399,113 n 3267,872 n 2,257 n 13,132 n 66444,341 n 91,507 n , , , ,5 50,236 42, ,706 n n , ,547 77,565 n 8 n , ,554 26,25 34,01 29,52 34,92 13,91 12,87 27,83 30,72 CV% (F) 35,73 46,42 33,35 42,89 9,46 9,77 38,23 36,61 6

7 ** = ignificant at 0,01 probability; * = ignificant at 0,05 probability; n = not ignificant. Plant height (PH) and crown diameter (CD) were reduced with decreaing oil moiture according to the different percentage of field capacity of the oil to which they were ubmitted (Figure 1). Conidering the 40 cm cutting height to which the plant were ubmitted at the beginning of the experiment, treatment T 1, at the end of three month of culture, had an average PH of cm, that i, an increae of cm, a value higher than the other treatment of 75.19, and cm for T 2, T 3 and T 4 repectively. Thee reult how the regrowth ability of Atriplex nummularia, a characteritic that influence it production capacity. Souza et al. (2012) reported a cm recovery of altbuh height in relation to cutting height, which wa 60 cm, after four month of cultivation in a odium aline oil under field condition Figure 1. Linear regreion equation relating plant height (PH) and crown diameter (CD) of altbuh (Atriplex nummularia L.) irrigated with wate from dealination differing in oil moiture level. Moreover, the material reulting from regrowth howed to be tenderer for branche, not exceeding 1 cm in diameter, facilitating it ue a forage for animal, in thi particular cae for goat. The literature how that altbuh can reach over 2.0 m in height in the firt year of cultivation and can reach 2 3 m in five year (PORTO et al., 2006). 7

8 CD had a imilar behavior. However, difference between treatment were lower. T 1 had a cm CD average while the other were 67.94, and cm for T 2, T 3 and T 4 repectively. Thee reult allow inferring that the pacing adopted for the cultivation of Atriplex can be modified according to the purpoe of planting. When the aim i to cut altbuh to upply it freh to animal, the ilage or hay production may reduce the pacing, thereby increaing productivity. Vaconcello (2011) obtained a productivity of 44,250 and 18,632 kg ha -1 of Freh and Dry matter repectively by uing a 1 x 1 m pacing and irrigating the Atriplex with effluent from the creation of tilapia with watewater from dealination and performing cutting only at ix month of cultivation. In the preent tudy, the cutting of altbuh wa performed three month after the previou cut. Thi management allow uing a more dene pacing. Moreover, the denity may allow for a more efficient extraction of alt per oil area. There wa a reduction in Freh Matter due to the reduction of oil moiture in the treatment, howing that Atriplex nummularia, depite being conidered a halophyte reitant to drought, decreae it productivity when kept under reduced water condition (Figure 2) Figure 2. Linear regreion equation relating Leaf Freh Matter (LFM), Stem Freh Matter (SFM) and Total Freh Matter (TFM) of altbuh irrigated with wate from dealination differing in oil moiture level. 8

9 The greatet loe occurred in the leave, where reduction in LFM were 9.91, and 45.48% in T 2, T 3 and T 4 repectively, compared to treatment T 1. Thi ame tendency occurred with TFM. However, becaue of the behavior of T 2 ' SFM, where there wa no reduction in comparion to the control; the decreae in TFM for thi treatment wa only 5.74% when compared to the control. A imilar behavior wa oberved by Souza et al. (2012). In their tudy regarding leaf freh matter, the treatment with 75 and 95% of FC did not differ and urpaed the other (35 and 55% of FC) when cultivating Atriplex nummularia in pot with a harvet at 134 day after tranplanting. A for tem freh matter, the treatment with 75% of FC wa higher than the other, promoting an increaed production. The author obtained a g plant -1 of LFM for the treatment with 95% of FC, ten time lower than that obtained in thi tudy for 100% of FC, which wa g plant -1. Thi i becaue the author harveted altbuhe at 134 day after tranplantation, that i, the period of the firt cut, which differ from the preent tudy where data were obtained from a econd cut three month after the firt cut, the period when a greater timulu to the regrowth of branche occurred. Thee reult how that Atriplex nummularia, under the condition to which it wa ubmitted during the tudy, barely reduced it yield with oil moiture kept at 85% of FC, proving it ability to tolerate water tre at thi level. Thi repreent an adaptive advantage of thi pecie regarding the local climate and in term of the effect of the frequent drought. It i therefore an alternative to forage production for mall farmer given it poibility to be ued a a forage pecie. The behavior of Dry Matter wa imilar to that of Freh Matter (Figure 3). LDM wa uperior to SDM for all treatment. Regarding LDM, the reduction were and 42.71% in T 3 and T 4, compared to the control, repectively, while, for T 2, the decreae in LDM wa 11.09%. In any cae, it wa oberved for TDM that the difference between T 1 and T 2 wa only 3.54% or le. The obtained production were and g plant -1 repectively. For SDM, treatment T 2 (85% of FC) had a value higher than the control treatment (100% of FC), corroborating the reult of Souza et al. (2012), who obtained a higher value for thi variable for a treatment with 75% of FC compared to the control (95% of FC). 9

10 Figure 3. Linear regreion equation relating Leaf Dry Matter (LDM), Stem Dry Matter (SDM) and, Total Dry Matter (TDM) of altbuh irrigated with wate from dealination differing in oil moiture level. By extrapolating the reult of altbuh production of TFM and TDM, conidering the pacing ued (1.5 x 1.5 m), the value of yield were obtained in kg ha -1 and in kg ha -1 year -1 (Table 3). Table 3. Total yield baed on Total Freh Matter (TFM) and Total Dry Matter (TDM) of Atriplex nummularia irrigated with wate from dealination. Total Yield Treatment kg ha kg ha -1 year TFM TDM TFM TDM T , , , ,00 T , , , ,24 T , , , ,19 T ,08 915, , ,65 Average 4435, , , ,02 10

11 The productivity reached 5, and 1, kg ha -1 of FM and DM repectively for the treatment at 100% FC while the extrapolated yield for one year wa 22, and 6, kg ha -1 year -1 for FM and DM repectively in the ame treatment. Thee value are very cloe to thoe obtained by Porto et al. (2006), who obtained 21, kg ha -1 year - of FM and 6, kg ha -1 year -1 of DM conidering altbuh forage irrigated with 75 L of watewater from dealination per plant per week. According to Porto et al. (2006), altbuh yield normally ranged from 5 to 15 Mg ha -1 year -1 of dry matter, and mot of the reult were between 6 and 8 mg h -1 year -1, thu corroborating thi tudy. Thi i conidered a reult compatible with everal other forage irrigated with water adequate for irrigation, uch a alfalfa. Barroo et al. (2006), uing effluent from tilapia breeding to irrigate Atriplex, obtained yield higher than in thi tudy by varying the volume of effluent applied from 75 to 300 L per week per plant, reaching a maximum productivity of 11,416.0 kg ha -1 year -1 of forage DM. Conidering the local climate under the environmental perpective of reuing wate from dealination, the reult of thi tudy point to Atriplex nummularia a a potential alternative to depoit wate, providing mall producer with the poibility of producing forage during drought uing low-quality water ince the altbuh' ability to produce forage under water tre wa very evident in thi tudy. The allocation of Freh Matter occurred more in leave (72.49%) than in tem (27.51%), howing a greater production capacity of the leaf forage fraction in comparion with tem (Figure 4A). Conidering Dry Matter, the proportion of tem increae to 39.03%, proving the importance of thi forage fraction in the final compoition of dry matter (Figure 4B). 11

12 A 281 B Figure 4. Allocation of Freh (A) and Dry Matter (B) of altbuh on leaf and tem forage fraction differing in oil moiture level. The forage fraction analyzed, leaf and tem, were not very enitive to water level in the oil to which they were ubmitted ince, among bromatological compoition variable, only DM uffered a ignificant effect (P> 0.05) regarding the tem. For the leaf fraction, except for CP, all other variable were ignificantly influenced by oil moiture. The fertilization did not ignificantly affect any of the variable analyzed for leave and tem (Table 4). 12

13 Table 4. Summary of the analyi of variance of the variable Crude Protein (CP), Mineral Matter (MM), Organic Matter (OM) and Dry Matter (DM) of leave and tem of altbuh. MS Leaf Stem SV DF CP CP MM OM DM (%) (%) MM OM DM Soil moiture 3 1,405 1,376 1,376 2,585 4,124 0,142 0,142 15,937 levei (SML) 6 Linear regreion 1 3,142 n 5,450 n 0,192 0,192 3,976 n 3,976 n 4,886 n n n 1,327 n Quadratic regreion 1 0,757 n 0,00004* * 0,00004 ** 1,094 n 6,317 n 0,114 n 0,114 n 41,142 * Cúbic regreion 1 0,315 n 0,15295 n 0,15245 n 1,774 n 0,605 n 0,119 n 0,119 n 5,3435 n Reidue (SML) 12 3,486 1,619 1,619 2,353 2,554 1,062 1,062 5,629 Plot 15 Fertilization (F) 1 0,457 n 0,1495 0,165 0,165 1,024 n 1,024 n 3,134 n n n n 1,879 n Interaction (SML) x (F) 3 5,492 n 3,489 n 0,443 n 0,443 n 1,313 n 0,704 n 0,704 n 12,202 Reíduo (F) 2 3,56 1,071 1,071 0,701 4,548 1,207 1,207 6,575 TOTAL 31 CV% (SML) 12,54 4,23 1,82 29,52 30,97 11,38 1,13 34,92 CV% (F) 12,68 3,44 1,48 33,35 41,32 12,14 1,21 42,89 ** = ignificant at 0,01 probability; * = ignificant at 0,05 probability; n = not ignificant. The level of crude protein (CP) in the leave were, for all treatment, cloe to 15% (Table 5), howing that altbuh ha good forage quality. Thee value are in agreement with thoe obtained by Barroo et al. (2006), who obtained a maximum of 15.79% at 12 month after planting, value above the value obtained by Waton and O'Leary (1993). On the other hand, Porto et al. (2001) reported mean level of CP of leave of 18.7% and 18.5% repectively, confirming that altbuh leave hold good level of crude protein, n 13

14 level that may be compared with thoe of ome legume and other pecie often ued in animal feed, uch a Leucaena, Gliricidia, forage guandu pea and maniçoba, which in general have between 12 and 22% of crude protein (CARVALHO JUNIOR et al., 2010). A for the tem, the CP content wa lower if compared to leave (Table 5) and below the value obtained by Barroo et al. (2006). Overall, CP reult how relevant Atriplex characteritic a forage even under low oil moiture condition, allowing ue of it in feed for livetock in area frequently lacking rain, uch a the Brazilian emiarid region, ince the critical content for animal conumption i 7% of CP in dry matter. For a good performance of lactating cow, forage hould contain approximately 15% of CP; for growing animal, the % level i acceptable. Table 5. Crude Protein (CP), Mineral Matter (MM), Organic Matter (OM) and Dry Matter (DM) of altbuh leave (Atriplex nummularia) at 3 month after cutting Leaf Stem Treatment % CP MM OM DM CP MM OM DM T 1 14,36 30,53 69,47 22,20 4,99 8,98 91,02 36,74 T 2 14,77 30,34 69,66 21,76 4,72 9,04 90,96 38,09 T 3 15,31 29,84 70,16 22,74 4,72 8,95 91,05 39,01 T 4 15,11 29,65 70,35 23,04 6,22 9,24 90,76 35,83 Average 14,89 30,09 69,91 22,43 5,16 9,05 90,95 37,42 The Mineral Matter (MM) content wa high in leave (Table 5), howing a quadratic effect for thi variable in the treatment (Figure 5A). The oil kept at 100% FC (T 1 ) had a higher MM content (30.53%), confirming the enormou capacity of Atriplex in extracting oil alt, which i the main factor that provide the elimination of alt. Moreover, thi extenive alt accumulation capacity in the leaf tiue i conidered a a major limitation of the ue of altbuh a forage, it being neceary to limit the proportion of altbuh in the compoition of animal feed ince higher ratio may lead to rejection of the plant by the livetock. Souto et al. (2005), providing heep with a diet containing 38.30% of altbuh hay, provided an average daily gain of 145 g/day to animal. The leaf OM uffered a quadratic effect, behaving inverely to MM, in the treatment with the lowet oil moiture (T 4 ). It had the highet proportion of OM (70.35%) (Figure 5B). 14

15 329 A B Figure 5. Regreion equation relating Mineral Matter (MM) (A) and Organic Matter (OM) (B) of altbuh irrigated with wate from dealination differing in oil moiture level. Regarding the tem, OM level were above 90% for all treatment (Table 5). Thee data are in agreement with thoe obtained by Carvalho Junior et al. (2010). A for the DM of leave, it decreaed a the oil moiture in treatment increaed. Thi i the oppoite effect to that oberved for tem DM where T 2 and T 3 were higher (Figure 6). However, the value for leave were lower than the value obtained for tem DM (Table 5). Leaf and tem DM value, imilar to thoe obtained in thi tudy, are preented in Porto et al. (2001). 15

16 Figure 6. Regreion equation relating Dry Matter (DM) (A) of altbuh tem irrigated with wate from dealination differing in oil moiture level. CONCLUSIONS Saltbuh freh and dry matter production with an 85% oil moiture level in relation to field capacity had the minimum lo of yield, being productive even in the driet oil. The total yield, freh and dry, wa atifactory uing the wate from dealination for the irrigation of altbuh, proving it viability for the production of forage. The Atriplex nummularia howed a good bromatological quality for all treatment, epecially in relation to crude protein. REFERENCES ANDRADE, R. S.; STONE, L. F. Etimativa da umidade na capacidade de campo em olo ob Cerrado. Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.15, n.2, p , BARROSO, D. D. et al. Produtividade e valor nutritivo da fraçõe forrageira da erva-al (Atriplex nummularia) irrigada com quatro diferente volume de efluente da criação de tilápia em água alobra. Revita Agropecuária Técnica, Areia, v.27, n.1, p ,

17 CARVALHO JÚNIOR, S. B. et al. Produção e avaliação bromatológica de epécie forrageira irrigada com água alina. Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.14, n.10, p , DIAS, N. S. et al. Concentração alina e fae de expoição à alinidade do meloeiro cultivado em ubtrato de fibra de coco. Revita Braileira de Fruticultura, Jaboticabal, v.33, n.3, p , SANTOS, H. G. et al. Sitema braileiro de claificação de olo. 1 ed. Braília, DF: EMBRAPA, p. GLENN, E. P.; BROWN, J. J. Effect of oil alt level on the growth and water ue efficiency of Atriplex canecen (Chenopodiaceae) varietie in drying oil. American Journal of Botany, Rockville, v. 85, n.1, p.10 16, MEDEIROS, J. F. et al. Management trategie of aline water on morphometric characteritic of melon cultivar. Revita Engenharia Agrícola, Jaboticabal, v.34, n.4, p , MELLO, C. R. et al. Etimativa da capacidade de campo baeada no ponto de inflexão da curva caracterítica. Revita Ciência Agrotécnica, Lavra, v.26, n.4, p , PORTO, E. R. et al. Rendimento da Atriplex nummularia irrigada com efluente da criação de tilápia em rejeito da dealinização de água. Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.10, n.1, p , PORTO, E. R.; AMORIM, M. C. C.; SILVA JÚNIOR, L. G. A. Uo do rejeito da dealinização de água alobra para irrigação da ervaal (Atriplex nummularia). Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.5, n.1, p , SILVA, F. de A. S.; AZEVEDO, C. A. V. de. Principal Component Analyi in the Software Aitat-Statitical Attendance. In: WORLD CONGRESS ON COMPUTERS IN AGRICULTURE, 7., 2009, Reno. Anai Reno-NV-USA: American Society of Agricultural and Biological Engineer, SILVA, D. J.; QUEIROZ, A. C. Análie de alimento: método químico e biológico. 3. ed. Viçoa, MG: UFV, p. SOARES, T. M. et al. Detinação de água reiduária proveniente do proceo de dealinização por omoe revera. Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.10, n.3, p , SOARES, H. R. et al. Lettuce growth and water conumption in NFT hydroponic ytem uing brackih water. Revita Braileira de Engenharia Agrícola e Ambiental, Campina Grande, v.19, n.7, p ,

18 SOUTO, J. C. R. et al. Deempenho produtivo de ovino alimentado com dieta contendo nívei crecente de feno de erva al (Atriplex nummularia Lindl). Revita Ciência Agronômica, Fortaleza, v.36, n.3, p , SOUSA, R. B. C. et al. Variação azonal da água ubterrânea utilizada para irrigação na microrregião de Tibau, RN. Revita Caatinga, Mooró, v.22, n.4, p , SOUZA, E. R. et al. Bioma, anatomical change and omotic potential in Atriplex nummularia Lindl. cultivated in odic aline oil under water tre. Environmental and Experimental Botany, Amterdam, v.82, n.1, p , TERCEIRO NETO, C. P. C. et al. Crecimento do meloeiro pele de apo irrigado com água alobra com diferente etratégia de manejo. Revita Caatinga, Mooró, v.27, n.2, p , VASCONCELLOS, E. B. de C. Dinâmica da água e do nutriente no itema de produção integrado gerado pela dealinização da água de poço do emiárido braileiro p. Diertação (Metrado em Ciência: Área de Concentração em Ecologia Aplicada) Ecola Superior de Agricultura Luiz de Queiroz, Piracicaba, WATSON, M. C.; O LEARY, W. O. Performance of Atriplex pecie in the San Joaquin valley, California, under irrigation and with mechanical harvet. Agriculture, Ecoytem and Environment, Amterdam, v.43, n.3-4, p ,