ABSTRACT
A field experiment was conducted during kharif 2011 at the Student’s Farm, College of Agriculture, Rajendranagar, Hyderabad on red sandy loam soils to study the effect of nitrogen management in speciality corn under Pongamia + maize agri-silvi system. All the growth and yield attributes such as plant height, dry matter production, leaf area index, cob length, cob girth, number of cobs plant-1, number of rows cob-1, number of kernals cob-1 and 100 kernel weight were found maximum at 120 kg N ha-1 than at the remaining nitrogen levels. Whereas, cob weight (with husk) was found maximum at 120 kg ha-1 but was on par with 90 kg N ha-1. Similarly cob yield (with husk), green fodder/stover yield, harvest index, kernel yield of popcorn and shelling percentage of popcorn were found significantly higher at 120 kg N ha-1 than the other two lower doses of nitrogen. The different types of corn were found significantly different from each other regarding growth parameters such as plant height, days to 50 per cent silking and days to maturity. Regarding the effect on yield attributes and yield, all the three types of corn were found significantly different from each other in cob length, cob girth, cob weight (with husk), green cob yield as well as green fodder/stover yield.
ABSTRACT
O minimilho, uma espiga imatura ainda não fertilizada, vem ganhando importância no Brasil para o consumo como conserva, principalmente por ser agradável e apresentar baixo valor calórico. A pesquisa se propôs avaliar a qualidade das conservas de quatro híbridos; determinar a composição nutricional destes híbridos; e determinar o rendimento de minimilho para a produção de conserva. Os procedimentos de acidificação aplicados durante o processamento, essencial para a qualidade dessas conservas, resultaram em produtos seguros para o consumo. Os provadores preferiram a conserva de minimilho mais ácida, apresentando um valor de pH projetado para o equilíbrio de 3,9 ao invés de 4,2, bem como, a conserva contendo a salmoura de 4,0 por cento, p/v, de sal. As conservas dos híbridos DKB 214, P 3021, AG 6018 e DKB 215 não diferiram estatisticamente quanto ao paladar. As composições nutricionais desses híbridos foram similares e confirmaram se tratar de um produto de pouco valor calórico, apresentando concentrações porcentuais baixas de carboidratos digeríveis mais proteínas (6,87-7,21 por cento) e insignificante de lipídeo (< 0,30 por cento). Considerando o rendimento em massa média de minimilho sem palha em relação à matéria-prima com palha, o híbrido P 3021 foi o recomendado, pois, apresentou 25,90 por cento a mais em relação ao híbrido de menor rendimento AG 6018.
Baby corn, immature corn-cob yet fertilized, has become important for the canning in Brazil, because it is specially pleasant and low-calories. This research proposed to evaluate the quality of canned baby corn from four cultivars; determine the nutritional compositions of these cultivars; and determine the baby corn yield for canning. The acidification procedures used in processing resulted in a product safe for consumption. The tasters preferred the canned baby corn with highest acidity, which had an estimated pH 3.9 for stabilization, instead of 4.2 and canned with 4.0 percent brine. The canned of the cv. DKB 214, P 3021, AG 6018 and DKB 215 were considered equally palatable by the tasters. The nutritional compositions of the four cultivars were similar and these were low-calories because they had law-concentration in both the carbohydrate and the protein, and the lipid was insignificant (lower than 0.30 percent). Thus, considering the yield in baby corn for the canned, the cv. P 3021 was recommended, because it had a yield of 25.90 percent higher than the cv AG 6018, which had the lower.