Abstract
The status of soil nutrients and crop productivity of sorghum in sorghumsafflower cropping system under various tillage and organic amendment treatment was studied. In general, yield of sorghum was increased due to tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavation. The status of organic carbon and availability of N, P and K was also increased due to tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavation. Research Paper : The decline in soil fertility and productivity due to nutrient imbalance has been recognized as one of the most important factors limiting crop yields (Nambiar and Abrol, 1989). Indiscriminate use of high analysis of chemical fertilizers also results in the deficiency of nutrients other than the applied fertilizers and disturbs the natural equilibrium of nutrient elements in soils (Singh et al., 1999). The beneficial effect of tillage and organic amendments on status of organic carbon, availability of NPK and yield of sorghum might be due to improved physical properties, maximum microbial population and their activity. The present study was carried out to evaluate the influence of tillage and organic amendments on nutrient availability in the soil and productivity of sorghum in sorghum-safflower cropping system. MATERIALS AND METHODS A field experiment on sorghum-safflower system was studied in 1998-1999 and 1999-2000 at Agronomy Farm, Marathwada Agricultural University, Parbhani, Maharashtra. The soils belong to the order vertisol. The soil of experimental field was clayey in texture with bulk density of 1.32 Mg M, alkaline in reaction (pH-7.97) with normal EC of 0.38 dsm, calcareous in nature, medium in organic carbon (4.2 g kg), low in available nitrogen (196 kg ha), medium in available phosphorus (12.78 kg ha) and high in available potassium (356.68 kg ha). Eighteen treatment combinations comprising three tillage treatments T 1 (Tillage with low weight wooden plough), T 2 (Tillage with heavy weight mould board plough), T 3 (Tillage with tractor plough), three levels of organic amendments A 1 (No FYM/PMC), A 2 (PMC@ 5 Mg ha ), A 3 (FYM @5 Mg ha) and two levels of pulverization (P 1 two harrowing and P 2 one rotavation) were replicated in four times in FRBD. The recommended doses of N, P and K were applied to soil in different plots. After harvest of sorghum in both years of study soil samples were collected from 0-15 cm layer from each plot and analyzed for organic carbon (Walkley and Black, 1934), available N (Subbiah and Asija, 1956), 0.5 M NaHCo 3 (pH8.5) extractable P (Olsen et al., 1954) and 1 N NH 4 OAC extractable K (Jackson, 1973). RESULTS AND DISCUSSION The results obtained from the present investigation are summarized in Table 1 and 2. Organic carbon content: The data presented in Table 1 on organic carbon content in soil at surface layer (0-15 cm) as affected by tillage and organic amendments indicate that tillage treatments with their depth significantly increased organic carbon content of soil in both the year. Tillage with tractor plough recorded higher values of organic carbon content (5.1 and 5.3 g kg) in soil over other treatments. Among organics, PMC proved superior to build up greater organic carbon (5.2 and 5.4 g kg) status of soil than FYM (4.9 and 5.1g kg) and control (4.5 and 4.7 g kg) treatments. The combined effect of treatment was found to be inconsistent and was not reached to the level of significance to their respective control, in both the years of study except, TxA interaction was found beneficial to See end of the article for authors’ affiliations
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Claims 7
Claim · model-written summary
Tractor ploughing, press mud compost and rotavation increased sorghum yield.
- Treatment
- tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavatione0
- Outcome
- yield of sorghume0
- Direction
- increasede0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yield of sorghum was increased due to tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavation”
Claim · model-written summary
The same tillage and amendment combination increased soil organic carbon.
- Treatment
- tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavatione0
- Outcome
- organic carbone0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The status of organic carbon and availability of N, P and K was also increased due to tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavation”
t0“crop productivity of sorghum”
Claim · model-written summary
The same tillage and amendment combination increased soil nitrogen, phosphorus and potassium availability.
- Treatment
- tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavatione0
- Outcome
- availability of N, P and Ke0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The status of organic carbon and availability of N, P and K was also increased due to tillage with tractor plough, amending the soil with the help of press mud compost followed by pulverization with rotavation”
t0“crop productivity of sorghum”
Claim · model-written summary
Tillage treatments significantly increased surface soil organic carbon in both years.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillage treatments with their depth significantly increased organic carbon content of soil in both the year”
t0“crop productivity of sorghum”
Claim · model-written summary
Tractor ploughing gave higher soil organic carbon values of 5.1 and 5.3 g kg.
- Treatment
- Tillage with tractor ploughe0
- Outcome
- organic carbon contente0
- Direction
- highere0
- Value
- 5.1 and 5.3 g kge0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage with tractor plough recorded higher values of organic carbon content (5.1 and 5.3 g kg) in soil over other treatments”
t0“crop productivity of sorghum”
Claim · model-written summary
Press mud compost produced higher soil organic carbon than farmyard manure and control.
- Treatment
- PMCe0
- Outcome
- organic carbone0
- Direction
- greatere0
- Value
- 5.2 and 5.4 g kge0
- Qualifier
- control (4.5 and 4.7 g kg)e0
- Comparator
- FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PMC proved superior to build up greater organic carbon (5.2 and 5.4 g kg) status of soil than FYM (4.9 and 5.1g kg) and control (4.5 and 4.7 g kg) treatments”
t0“crop productivity of sorghum”
Claim · model-written summary
Combined treatment effects on soil carbon were inconsistent and usually not significant.
- Treatment
- combined effect of treatmente0
- Outcome
- combined effect of treatmente0
- Comparator
- their respective controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined effect of treatment was found to be inconsistent and was not reached to the level of significance to their respective control, in both the years of study”
t0“crop productivity of sorghum”
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