Methods and rates of poultry litter fertilization for corn silage in organic system

Abstract

The creation of proper soil fertility is fundamental to the agroecological transition phase and guarantees the sustainability of organic agribusiness. In a randomized complete block design with a 3 x 2 factorial scheme with 1 additional treatment (control, without organic fertilizer), we tested three poultry litter rates (7, 14, and 21 Mg ha-1) at sowing or splitting between sowing (30%) and side-dressing (70%) for two summer corn whole-plant silage crops and for the soil chemical attributes. The splitting of the poultry litter rate during the rainy season preserves the soil K content, prevents the accumulation of soil P and increases the efficiency of the increasing yields of the organic whole-plant corn silage crop. The reapplication of pre-sowing poultry litter can lead to an accumulation of P and Ca in the soil but favors fresh matter and cob dry matter yields in the dry season. The splitting of the poultry litter rate for whole-plant corn silage can guarantee technical and environmental sustainability in rainy years, but on the other hand, the reapplication of this organic fertilizer only at pre-sowing can increase the fresh matter yield and protein quality of organic whole-plant corn silage cultivated in an Inceptisol in the dry season.

Twice Applications of Laying Hens Manure Produced the Highest Yield of Organic Okra Pods (Abelmoschus esculentus L. Moench.)

“…Considering these results, it can be inferred that the efficiency of split PL fertilization might have increased, leading to a higher nitrogen-to-phosphorus (N:P) ratio. This, in turn, reduced the accumulation of phosphorus (P) in comparison to the fertilization method involving PL only at corn pre-sowing, as discussed by Yagi et al (2020).…”

“…Application of the poultry organic matter in split rates across the entire corn silage crop assures technical and environmental sustainability during wet periods. On the other hand, reapplication of this organic fertilizer only at pre-sowing can increase fresh matter yields and protein quality of organic whole-plant corn silage cultivated in on inceptisol in the dry season (Yagi et al, 2020).…”

Socio-technical transitions and sustainable agriculture in Latin America and the Caribbean: a systematic review of the literature 2010–2021

“…One corresponds to Garrett et al (2017a), which addressed the integration of agricultural and livestock systems on the same ground, focusing on how federal policies in Brazil, New Zealand and the United States encourage or discourage this practice. Withers et al (2018) analyzed Brazil's current and future phosphorus supply and explored the alternative use of livestock manure and residues from sugarcane processing as its substitute. Yagi et al ( 2019) addressed soil fertilization using various proportions of bird manure in Brazil, identifying the benefits of the splitting of the poultry litter rate during the rainy season.…”