BIO203H5 Midterm: Term Test 2 notes
Document Summary
Pale yellow/green due to chlorosis, old leaves die first and young leaves are nutrient sinks. Proton pumps that control stomata affected, plant has necrosis. Deficiency leads to purple patches and stunted growth. To increase growth, fertiliser has a lot of n; to increase flowering, high p, low n, and low k. nitrogen is the most limiting nutrient in temperate regions. Desert: soil has high (cid:272)o(cid:374)(cid:272) of (cid:374)utrie(cid:374)ts, (cid:449)ater pote(cid:374)tial is (cid:374)egati(cid:448)e so roots (cid:272)a(cid:374)"t get shit. If plant has too much of a nutrient, plant can secrete salt on its leaves advantageous because it makes it taste awful and reflects sunlight. If fruits, tubers, storage roots are destroyed, plant has to be fertilised those things have the highest concentration of minerals. Rocks and soil particles have a ve surface charge, anions hold on to cations weakly. Co2 released during cell respiration reacts with water in soil. Carbonic acid breaks into h+ and anion.
