Corn productivity varies according to rainfall and irrigation

The Conjunctural Report released by Emater/RS-Ascar on Thursday (29) indicates that corn in Rio Grande do Sul presents diverse phenological phases due to staggered planting and second-crop cultivation. Predominant are crops in grain filling, with 25% of the area, and in physiological maturation, with 28%. According to the report, the irregularity and scarcity of precipitations in part of the period "accelerated leaf senescence and the end of the cycle in some rain-fed crops", with possible impact on the weight of the grains and the final yield. In contrast, the high solar radiation favored photosynthetic activity and the accumulation of assimilates in areas that maintained adequate water supply in the soil, especially in irrigated systems. The harvest is advancing gradually and already reaches 28% of the cultivated area. The productivities vary according to the distribution of rains, the technological level employed, and the use of irrigation, generally ranging between medium and ...