Comparação de diferentes densidades de feijão guandu (Cajanus cajan (L.) Millsp.) na restauração florestal de uma área de reserva legal no Pontal do Paranapanema, SP

This paper compares different densities of pigeon pea (Cajanus cajan (L.) Millsp.) for restoration of forest reserves in Pontal do Paranapanema, SP. The authors tested 4 treatments of presence / absence and density of pigeon peas (Cajanus cajan) as nurse plants for planted tree species. One treatment was without the pigeon pea plants, a second with two plants per seedlings, a third removed one plant and left another in place after six months, and the fourth removed both plants after 6 months. The study found that the presence of pigeon pea plants decreased mortality and increased basal area and height of the seedlings, however, the presence of two plants increased the mortality rate and decreased basal area relative to the one plant treatment. The pigeon pea plants also increased organic matter in the soil, and reduced phosphorous levels.