Testing Times and Plant Density of Two Peanut Cultivars

Abstract

RESUMO:O amendoim (Arachis hypogea L.) é uma oleaginosa de grande importância para a produção de óleo, tanto para alimentação humana quanto para a indústria. No Brasil, sua produção é oriunda em maior escala da região Sudeste, seguida pelo Centro Oeste. O estado de Mato Grosso prioriza o cultivo em segunda safra o que favorece a ciclagem de nutrientes e rotação de culturas na região. Este trabalho teve como objetivo avaliar o desempenho de duas cultivares de amendoim, (C1 -IAC Tatu ST e C2 -IAC Runner 886), sobre a influência da época de semeadura e densidade de plantas. O delineamento experimental utilizado foi em blocos casualizados em esquema fatorial 2x3x4, com 4 repetições, dispostos na área experimental da Universidade do Estado de Mato Grosso (UNEMAT), -Campus Universitário de Tangará da Serra -MT. A semeadura foi realizada em quatro datas, sendo: E1 -16/02; E2 -26/02; E3 -08/03 e E4 -20/03, avaliando três densidades de plantas por metro linear (D1 -5; D2 -10 e D3 -15 plantas m -1 ), com 4 repetições. A produtividade média de grãos da C1 e C2 foi de 1564 kg ha -1 e 2491 kg ha -1 para a D2, com semeadura realizada na E1 respectivamente. A melhor época de semeadura para as duas cultivares foi a E1, já a melhor densidade de plantas por metro linear foi a de 10 pl m -1 . Palavras-chave:Arachis hypogaea L..Ppopulação de plantas. Espaçamento. Rendimento. TESTING TIMES AND PLANT DENSITY OF TWO PEANUT CULTIVARS SUMMARY:The peanuts (Arachis hypogea L.) is an oleaginous of great importance for the production of oil for both human consumption and for the industry. In Brazil, the production comes from larger scale in the Southeast and followed by the Midwest. The state of Mato Grosso prioritizes growing second crop which favors nutrient cycling and crop rotation in the region. This study aimed to evaluate the performance of two peanut cultivars (C1 -IAC Tatu ST and C2 -Runner IAC 886), on the influence of planting date and plant density. The experimental design was a randomized block in a factorial 2x3x4, with four replicates, in the experimental area of the State University of Mato Grosso (UNEMAT) -University Campus of Tangará da Serra -MT. Sowing was carried out on four dates, as follows: E1 -16/02; E2 -26/02; E3 -E4, and 08/03 -20/03, densities of evaluating three plants per meter (D1 -5; D2 -D3 and 10 -15 plants m-1), with 4 replicates. The average grain yield of C1 and C2 was 1564 kg ha-1 and 2491 kg ha-1 for D2, with sowing in E1 respectively. The best sowing time for the two cultivars was the E1, as the best density of plants per linear meter was 10 pl m-1.

Zoning of Water Deficiency Risk for Conventional Cotton in Mato Grosso

“…In a study by [27], whose objective was to determine the agroclimatic zoning of the peanut crop for the Upper Paraguay Basin region, in the state of Mato Grosso, a smaller restriction for peanut cultivation was observed in soils with higher AWC's, a similar result to those obtained in the present work. The lower restriction risk in soils whose AWC's are higher is a consequence of greater soil water storage in these soils, allowing late cultivation.…”

Peanut Cultivars Submitted to Irrigation Levels and Nitrogen Adubation in Tropical Climate

“…Mechanical sowing was performed on July 14 th , 2014, with a density of 10 plants per m -1 , and 0.45m spacing between lines as recommended by Barbieri et al (2016). The N-P-K formulation (5-30-15) was used in a dosage of 400 kg ha -1 and liming with 2,000 kg ha -1 of dolomitic limestone, following the recommendations of the crop and soil analysis.…”