Resumo
In this paper it is studied the action of vinasse as compared to mineral fertilizers. Beans, corn, cotton and sesame were cultivated in randomized blocks receiving the following treatments: A = mineral fertilizers (N, P, K); V = vinasse at the rate of 1,000,000 liters per Ha; AV = mineral fertilizers + vinasse; T = control. Statistical analysis of the experiments has consistently revealed the superiority of vinasse either combined or not with the mineral fertilizers over the remaining treatments. There was no significant difference between V and AV which shows the surprizing role of vinasse when applied to light soils such as those employed in the present experiments. By employing 1,000,000 liters of vinasse to the hectare the following amounts of nutrientes were applied to the crops in this experiment: 470 Kg of nitrogen 50 Kg of P2O5 and 3,100 Kg of K2O corresponds to 3,133 Kg of Chilean nitrate/ha 250 Kg of superphosphate and 5,160 Kg of muriate of potash Hence one cannot say that the action of vinasse is of a purely physical nature. In our opinion its outstanding action is due to: 1st raise in the pH value of the soil; 2nd addition of a tremendous amount of plant nutrients; 3rd supplying organic matter in a very finely divided state with all its benefical effects in soil structure, water holding capacity, adsorption of nutrients to prevent leaching, etc. A rotation experiment is now being carried out to study the residual effect of vinasse.
G. Ranzani, M. O. C. Do Brasil Sobr., E. Malavolta; T. Coury
Secção Técnica de "Química Agrícola", da Escola Superior de Agricultura "Luiz de Queiroz", da Universidade de São Paulo
SUMMARY
In this paper it is studied the action of vinasse as compared to mineral fertilizers. Beans, corn, cotton and sesame were cultivated in randomized blocks receiving the following treatments:
A = mineral fertilizers (N, P, K);
V = vinasse at the rate of 1,000,000 liters per Ha;
AV = mineral fertilizers + vinasse;
T = control.
Statistical analysis of the experiments has consistently revealed the superiority of vinasse either combined or not with the mineral fertilizers over the remaining treatments. There was no significant difference between V and AV which shows the surprizing role of vinasse when applied to light soils such as those employed in the present experiments.
By employing 1,000,000 liters of vinasse to the hectare the following amounts of nutrientes were applied to the crops in this experiment:
470 Kg of nitrogen
50 Kg of P2O5 and
3,100 Kg of K2O corresponds to
3,133 Kg of Chilean nitrate/ha
250 Kg of superphosphate and
5,160 Kg of muriate of potash
Hence one cannot say that the action of vinasse is of a purely physical nature. In our opinion its outstanding action is due to:
1st raise in the pH value of the soil;
2nd addition of a tremendous amount of plant nutrients;
3rd supplying organic matter in a very finely divided state with all its benefical effects in soil structure, water holding capacity, adsorption of nutrients to prevent leaching, etc.
A rotation experiment is now being carried out to study the residual effect of vinasse.
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BIBLIOGRAFIA
Trabalho apresentado na IV Reunião Brasileira de Ciência do Solo em Julho de 1953, em Belo Horizonte Secção IV - Fertilidade do Solo
- 1. ALMEIDA, J. R., G. RANZANI e O. VALSECCHI. 1950. Contribuition à 1'étude de la vinasse dans l'Agriculture - Tése au 8ème Cong. des Ind. Agrícolas. Bruxelles - Belgique.
- 2. ALMEIDA, J. R., G. RANZANI e O. VALSECCHI. 1952 L'enploi de la vinasse dans l'agriculture. Boletim n. 11 - E.S.A.L.Q. pág. 63-70.
- 3. RANZANI, G. 1952. O problema da vinhaça em São Paulo. Colheitas e Mercados n. 5-6: 11-14.
- 4. MELLO MORAES, J., e T. COURY. 1936. Análises dos Solos. Rev. "O Solo" ns. 7-12 - Piracicaba.
- 5. CATANI, R. A. e A. KUPPER. 1946. Algumas características químicas dos solos do E. S. Paulo e sua interpretação analítica. Bragantia. Vol. 6, n. 4: 147-163.
Vinhaça e adubos mine
Datas de Publicação
-
Publicação nesta coleção
01 Nov 2012 -
Data do Fascículo
1953
