Effect of Storage and Poultry Manure Dosage on Soil Nitrate (NO3-) and Ammonium (NH4+) Availability, N-Uptake, and Yield of Head Lettuce (Lactuca Sativa, L.) Grown on Typic Calciaquolls

Abstract The objective of this experiment was to investigate the effect of storage and poultry manure dosage on soil nitrate (NO3) and ammonium (NH4+) availability, N-uptake, and yield of Head lettuce (Lactuca sativa, L.) grown on Typic Calciaquoll. Data obtained from the experiment of seven treatments with four replications were subjected to Randomized Block Design. The observation conducted in three times i.e. 4 Week After Plant (WAP), 6 WAP, and 8 WAP. The treatments were: (1) without poultry manure (control), (2) dry poultry manure (DPM) with 12,5 g dosage, (3) DPM with 25 g dosage, (4) DPM with 37,5 g dosage, (5) fresh poultry manure (FPM) with 12,5 g dosage, (6) FPM with 25 g dosage, (7) FPM with 37,5 g dosage. The results of experiment showed that there were significantly effects of storage and poultry manure dosage on soil nitrate and ammonium, N-uptake, and yield of head lettuce. The treatment combination of DPM 37,5 g showed the highest value on soil nitrate and ammonium in 4 WAP, N-uptake in 6 and 8 WAP, and the yield of head lettuce in 6 and 8 WAP. The treatment combination of FPM 37,5 g showed the highest value on soil nitrate and ammonium in 6 and 8 WAP, N-uptake in 4 WAP, and the yield of Head lettuce in 4 WAP. Generally, it concluded that the dry poultry manure (DPM) had the better effects than the fresh poultry manure (FPM) on yield of head lettuce.

Keywords Ammonium, Head lettuce, Nitrate, Poultry manure, Yield.

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Agriculture Journal: Effect of Storage and Poultry Manure Dosage on Soil Nitrate (NO3-) and Ammonium (NH4+) Availability, N-Uptake, and Yield of Head Lettuce (Lactuca Sativa, L.) Grown on Typic Calciaquolls

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