Over the five years plant "A" was given a total of 45 grams of Fertilizer. Describe using your knowledge of nutrient cycles and limiting nutrients, how that small of an amount of fertilizer can result in 4 kg of difference in growth of the two plants. *
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Q: describe the symptoms of nutrient deficiency in plants.
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- two seedlings that weight 5 grams are planted, each into a pot containing 3 kg of soil. Plant "A" is given 3 grams of nitrogen, phosphorus, and potassium each per year and plant "B" is not. Both plants are kept on the same green house and given the same amount of water and light. After 5 years the plants are allowed to dry completely. the soil and dried plants are weighed again. The soil from both containers weighs 2.8 kg Plant "A" has a dry mass of 6 kg Plant "B" has a dry mass of 2 kg Where Did the matter come from as the plants grew? Explain your answer%OM pH EC Ca2+ Mg2+ K+ Na+ Al3+ H+ % dS/m cmolc/kg soil cmolc/kg soil cmolc/kg soil cmolc/kg soil cmolc/kg soil cmolc/kg soil 2.7% 7.6 4.5 19 13 10 3 1 4 Is this soil affected? If so, what type? - saline - sodic - not salt affected - saline-sodicI grow two tomato plants from seed in separate pots next to each other on my porch. I use the same potting soil in each pot and water both at the same time each day. To one pot I add a small amount of Miracle-Gro, while I add no extra fertilizer to the other. At the end of 6 weeks, the Miracle-Gro plant has increased in weight by 210%, while the other plant has increased by only 65%. Fill in the following table. Is there a control treatment (and, if so, what is it)? Is there any accounting for individual variation? Is there repetition in the experiment? What, if any, confounding variables are not addressed in the experiment?
- It is June in Fresno and the officials at the water district have just reduced your irrigation ration by 26%. In the field, you determine that the water potential in your soil is -1.68 MPa while the water potential of your crop is -1.62 MPa. Question A. Is your crop able to take up water from the soil? Explain. Question B. It is now late August and your soil water potential is -2.10 MPa, fortunately, you have been granted one magic wish in altering the physiology of your crop to increase its ability to take up water, however, you must choose from one of the options below. Fill in the values denoted by the ? as needed, and select the option that will cause the greatest water uptake by your crop. Option Vs (MPa) Vp (MPa) Vw (MPa) -1.90 0.00 -2.59 +0.13 -2.4 -2.09 -2.05 -2.28 +0.17 4.High buffering capacity means the soil is more fertile than soil with low buffering capacity. True or FalseYou have been presented with leaf samples with various nutrient deficiency symptoms shown below. (i) Identify missing nutrients of a, b, c, and d based on Figure 2 below. b Maine Organic Farmers and Gardeners Association University of Massachusetts, Amherst d Allotment Garden Cellmax Nutrients Figure 2: Nutrient deficiency symptoms of tomato Where would you expect to find symptoms of nutrient deficiency for mobile and immobile nutrients? Also, determine the mobility of missing nutrients identified in Question 2 b) (i). (ii)
- If a soil when sampled from the field weighed 30g(fresh weight) and after oven drying at 105°C overnight it weighed 25g( oven dry weight), what would be the moisture percentage?In New York, farmers typically have a 3 year crop rotation of corn – soybeans – green manure. A) explain one reason crop rotation is important in farming B) explain what green manure is and why a grower would use it as part of their rotation schedule43. Two soil samples, A & B, at same soil moisture levels are placed in contact with each other. Water will more likely move from soil B to soil A if their osmotic potentials, expressed in kPa, are: O A=-30; B=-70 O A=-10; B=+10 O A=-60; B=-10 O A=-50; B=-100 OA=-20%; B=-20
- Jim hasn't been having success in growing strawberry plants for the past few years, so he got his soil checked for soil conditions. He received information that the soil was too acidic. He wanted to check if the acidity of the soll was the reason for the unsuccessful growth of strawberry plants. He added lime (adding lime neutralizes acidic soils) to half of his garden. He did not add any lime to the other half of the garden and planted strawberries in his garden. He found that he had juicy strawberry bunches on the side of the garden where lime was added. 1. What is the observation of this experiment? a) Jim does not know how to grow strawberries b) Strawberries do not grow on plants c) There is some problem with the soil d) Jim does not like strawberries 2. What is the control group in the experiment? a) Strawberries grown in the soil manipulated with lime b) Strawberries grown in the soil with no lime added c) Jim, who added lime to the soil d) Strawberries that were not growing in…Fertile soil is one of the keys to good yield. (i) Explain the roles of clay and organic matter in contributing to soil fertility and cation exchange capacity (CEC). (ii) Name ONE (1) negative effect of low CEC and high CEC soils respectively. Suggest ways to improve low CEC and high CEC soils. (iii) Suggest ONE (1) suitable type of crops for high CEC soil, low CEC soil and loam soil respectively.According to the water potential values shown in the image, which ones are wrong and why? W air (22 °C, 50% HR) -100 MPa Cas V sheet -0.2 MPa W stem -0.01 MPa to -0.1 MPa W soil -1 MPa to -0.51 MPa -4 MPa W root -0.1 MPa to