Question

In experimental research, an agricultural scientist is comparing maize yields per acre
for which a nitrate based fertilizer has been used to those from plots having a sulphur
based fertilizer. A sample of 100 acres using nitrate has yielded an average of 56.2
bags per acre with a standard deviation of 12.5 bags. The sample of 150 acres with
sulphur fertilizer has yielded an average of 52.6 bags per acre with a standard
deviation of 13.8 bags. Test the relevant hypothesis to validate or invalidate whether
nitrate based fertilizer is superior at 10 percent significance level

Answer 1

Answer:

According to the law of conservation of mass, matter can neither be created nor destroyed, so the total quantity of matter, i.e., the total mass, before and after a change, remains the same. So, the mass of the substances, taken together, before and after a chemical change, will also remain the same. 

From this, it can be concluded that any new substance formed during a chemical change is due to the rearrangement of the atoms of the original substance. The number of atoms of each kind remains the same, before and after the chemical change.

Answer 2

Answer:

• 75% of the world's population eats rice, making it the most important staple cereal for human nutrition.
• For the rice plant to develop at its best, vital nutrients must be supplied.
• Following the green revolution, India saw a significant increase in rice production because of careless irrigation, and the use of inorganic fertilizers, and pesticides. However, employing inorganic fertilizers has caused groundwater contamination and decreased soil productivity, which in turn has a long-term impact on rice output.
• Although the use of organic manure may help to restore the soil's health, it is insufficient to supply the necessary nutrients for optimum growth.
• To achieve the best yields, organic manures and inorganic fertilizers are used together.
• This research sought to examine the impact of various organic fertilizers and blends of organic and inorganic fertilizers on the qualitative and quantitative characteristics of two rice cultivars, DRR Dhan 39 and RP.BIO.226, respectively.
• During the Kharif season, the experiment was carried out on a farm in the Sangareddy district of Telangana's Fasalwadi hamlet using a randomized complete block design with three replications.
• The treatment consisted of two controls, ten combinations of four organic fertilizers, such as vermi compost, farmyard manure, Panchagavya, and Jeevamrutha, and a combination of inorganic fertilizers with levels of N, P, and K of 60:75:75.
• At the time of harvest, samples of grain and straw were taken, and physical characteristics were measured.
• The outcomes showed that the variety DRR Dhan 39 produced a greater grain yield of 8713 kg/ha and a higher straw yield of 9483 kg/ha which was statistically significant (P0.0001).
• using 50% NPK inorganic fertilizer, Jeevamrutha 5%, Panchagavya 3%, and Vermicompost organic fertilizers.
• On the other hand, the variety RP.BIO.226 produced the highest grain yield of 6390 kg/ha with Vermicompost, Jeevamrutha 5%, and Panchagvya 3% (8 t/ha, foliar spray, and 500 liters/ha) and the highest straw yield of 7430 kg/ha with T10 treatment (50 percent inorganic fertilizer of NPK and 50 percent each of Vermicompost, Jeevamrutha Lower grain and straw yields were the result of both kinds of rice's poor response to inorganic fertilizers.
• With various fertilizers, statistically significant variations were found in both varieties of grain's crude protein (CP%), straw's acid detergent fiber (ADF%), crude fiber (CF%), and acid detergent lignin (ADL%).

 

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