White mold, caused by the fungus Sclerotinia (Whetzelinia) sclerotiorum, is distributed worldwide and has more than 300 hosts. It infects flowers, cotyledons, seeds, leaves or injured plant tissue. The disease can be controlled by crop rotation, flooding, reduced seeding rates, application of…
Different nutritional deficiencies or toxicities may limit bean development and yield. N and P deficiencies are the most frequent, although deficiency of minor elements and Al/Mn toxicity can reduce yields considerably. Nutritional problems are usually diagnosed by soil and plant tissue analyses…
White mold, caused by the fungus Sclerotinia (Whetzelinia) sclerotiorum, is distributed worldwide and has more than 300 hosts. It infects flowers, cotyledons, seeds, leaves or injured plant tissue. The disease can be controlled by crop rotation, flooding, reduced seeding rates, application of…
Se identificaron deficiencias nutricionales (principalmente de P y algo de K, Mg, Zn y Mo) en Calopogonium mucumoides. Se aplico 0- 240 kg de P205 como superfosfato triple, roca fosforica Araxa o termofosfato/ha, en Andropogon gayanus y stylosanthes capitata al momento de la siembra. El…
En 1977 se inicio la evaluacion de los recursos de tierra para estudiar las regiones de Oxisoles y Ultisoles en America del Sur, con el objeto de ayudar a establecer prioridades tecnicas para el mejoramiento de la tierra. Esta parte del trabajo se completo en 1979, pero el estudio ha sido…
Different nutritional deficiencies or toxicities may limit bean development and yield. N and P deficiencies are the most frequent, although deficiency of minor elements and Al/Mn toxicity can reduce yields considerably. Nutritional problems are usually diagnosed by soil and plant tissue analyses…
Projections reveal that to sustain the likely world population in the year 2000, an increase of 60 percent in agricultural production will be required. "Is there sufficient land to meet these needs?" becomes the overriding question. However, little precise information exists on which…
Methods for evaluating nutrient status in order to obtain better plant growth and increased yield are constantly being developed and improved. New analytical techniques and procedures for soil and plant analysis have been invented and tested in many countries and laboratories. There have been…
Lei No. 6.766 de 19 de Dezembro de 1979
Nesta edição, fiz alguns extensos acréscimos de informação histórica, resultantes da continuidade de minhas pesquisas sobre a sociedade que nascia no seio mesmo do escravismo. Tanto nos resultados de uma pesquisa sobre a acumulação de capital e a diversiβicação dos investimentos em São Paulo, no…
