Green and sweet corn grown under different cover crops and phases of the no-tillage system

Abstract

Special corn is cultivated all year conventionally round; however, its productivity increases when grown under a no-tillage system (NTS). This study aimed to evaluate the agronomic performance of sweet and green corn cultivated under residues of different cover crops and the NTS implantation stages. Two experiments were carried out in the randomized block design, with four replications, in each of the three areas. The experiments consisted of evaluating the sweet and green corn, simultaneously, in three areas at different stages of development of NTS: initial (1 year), transition (7 years), and consolidation (19 years) with six types of cover crops: Signal grass (SG), Pearl millet (PM), Sunn hemp (SH), a mixture of SG + SH, SG + PM, and PM + SH. The dry matter (DM) production of the cover crops, the productivity of husked and unhusked ears, straw, and grain yield were evaluated. The SH had the highest dry mass production among the studied cover crops in all phases of the NTS. The phase of the NTS did not influence the productivity of ears with or without husk in green corn. The cultivation of sweet corn in transition and consolidation areas of the NTS showed better yields when compared to the initial phase of the system.

Implementation and Use of Green Manures for Weed Suppression in Sequential Maize Cropping

“…30 days after cutting the green manures (DACGM) [2], maize was sown. Crop Top 520 hybrid maize was planted with a planting density of 0.50 m between rows and 0.30 m between plants at a depth of 2 cm [22]. Two seeds were planted in each hole, and planting was carried out manually using a seed drill.…”

“…Similar results were observed in the present study. Nunes et al [22] planted maize after cover crops in no-tillage conditions. Tey observed that when dry matter of the soil cover increased, maize yield also increased.…”

Technical efficiency of forage production from residues of green corn (Zea mays L.) in Sergipe, Brazil

“…Grains are consumed in their fresh form and processed foods, such as flaked flour, corn starch, and canned corn, but also in animal feed (Giordano et al, 2018), in the production of forage, energy, and industrial materials (Guo et al, 2018). However, there is no official record of green corn in Brazil, however, it is known that in 2018 world production was 9.1 million tons with an average yield of 8.1 Mg ha -1 (Nunes et al, 2022).…”