(debtor's motion to use cash collateral of creditor to fund expenses of growing crops in the future (in accordance with 11 U.S.C. Sec. 363(c)(2)-(3) and 11 U.S.C. Sec. 1205) denied; lien would not provide adequate protection and debtors' computations showed they would be left in worse position and cash flow problems made worse because of proposal to make higher payments under Chapter 12 reorganization plan; debtors' crop insurance could not be considered a guaranteed payment because it only guaranteed revenue and not profit; while debtors offered creditor third position on vehicles and equipment, debtors did not have sufficient equity in such items to amount to adequate protection).