Foliar tissue, grain yield and economic return by surface application of gypsum and different number of soybean plants in precision seed drill

Abstract

The gypsum has elevated calcium and sulfur in the soil, and there are reports of increased grain yield of soybean with reduced number of plants, being necessary in conjunction with economic return on investment. This study investigated the effect of application superficial of gypsum and different numbers of plants in precision seed drill in the nutritional aspect of the leaf tissue, grain yield of soybean cultivated in clayey Rhodic Hapludox and economic return on investment. Used in the experiment was a randomized block design in scheme tracks (4 × 4), with four doses of gypsum (0, 800, 1600 and 2400 kg ha -1 ) applied at the V4 stage of soybean Vmax RR (SYN 7059RR) and four variations in the number of plants ( 12, 14, 16 and 18 plants per meter), with four replications. Samples of leaf tissue were collected in the flowering stage of soybean in the 2011/2012 crop, and then determined the levels of Ca, Mg, K, P, S, Cu, Zn, Mn and Fe. At maturity the yield assessment was performed. The number of plants per meter with precision seed drill and superficial application of gypsum at the V4 stage do not affect the content of macro-and micronutrients leaf tissue of soybean cultivar SYN 7059RR. The application of gypsum at the V4 stage and reducing the number of plants per meter statistically do not affect the grain yield. Recommend lower number of plant (12 plants m -1 ) on soybean cultivar for SYN 7059RR. The economic returns using higher amount of seed (14, 16 and 18 plants m -1 ) is -283, -260 and -271% with investment of US$ 13.76, 29.24 and 44.72. Use of gypsum focused costs to only two cultures (soybeans and wheat) during the crop season provides residual soil of 104.43 kg ha -1 of S. Application 800 kg ha -1 gypsum provides US$ 14.56 profit with 44% economic return to payment half investment (US$ 33.32).

Effect of Sources and Levels of Sulphur on Quality, Nutrient Content and Uptake of Summer Cowpea (Vigna unguiculata L. Walp.) under South Gujarat Condition in India

“…This might be due to the higher yields produced by gypsum source (S 1 ) of cowpea. The results are close conformity to these obtained by Rampin et al [7] reported that application @ 800 kg/ha gypsum gave significantly higher grain yield of soybean and provided US$ 14.56 profit with 44 % economic returns to pay half investment (US$ 33.32).…”

Does gypsum increase crop grain yield on no‐tilled acid soils? A meta‐analysis

“…Without water deficiency, soybean had a low probability of responding to gypsum (37%), and the probability of crop yield increasing more than 5% in soils with Al saturation >40% was only 20% (Figure 9d). Effect on yield (%) Sávio et al, 2011Caires et al, 2016Minato et al, 2017Costa, 2015Oliveira and Paven, 1998Zandoná et al, 2015Caires et al, 2002Paulleti et al, 2014Michalovicz et al, 2014Vicensi et al, 2016Soratto and Crusciol, 2008aFreitas et al, 2017Meert, 2013Trindade, 2013Soratto and Crusciol 2008bCrusciol et al, 2016Dalla Nora et al, 2017aCaires et al, 1999Dalla Nora and Amado, 2013Sousa et al, 2010Costa and Crusciol, 2016Caires et al, 2004Fois et al, 2017Caires et al, 2011bMarques, 2008Caires et al, 2006Somavilla et al, 2016Tanaka, 2013Caires et al, 2003Arf et al, 2014Rampim et al, 2015Galleto, 2016Fontoura et al, 2018Marchesan et al, 2017Caires et al, 2011aNeis et al, 2010Rampin et al, 2011Soares, 2016Gelain et al, 2014Freitas et al, 2016Castañon et al, 2011Caires et al, 1998Leguizamón, 2017…”